[PATCH] scsi: ufs: Allows the driver to choose the interrupt handler type

[Kui Sun <kui.sun@unisoc.com>]

This capability allows the host controller driver to choose whether
To register interrupts in a threaded manner or in a
Standard (non-threaded) manner

Signed-off-by: Kui Sun <kui.sun@unisoc.com>
---
 drivers/ufs/core/ufshcd.c | 7 ++++++-
 include/ufs/ufshcd.h      | 7 +++++++
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
index d3044a3089b5..40fc6a60a4e7 100644
--- a/drivers/ufs/core/ufshcd.c
+++ b/drivers/ufs/core/ufshcd.c
@@ -11236,8 +11236,13 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
        ufshcd_readl(hba, REG_INTERRUPT_ENABLE);

        /* IRQ registration */
-       err = devm_request_threaded_irq(dev, irq, ufshcd_intr, ufshcd_threaded_intr,
+       if (hba->caps & UFSHCD_CAP_INTR_THREAD) {
+               err = devm_request_threaded_irq(dev, irq, ufshcd_intr, ufshcd_threaded_intr,
                                        IRQF_ONESHOT | IRQF_SHARED, UFSHCD, hba);
+       } else {
+               err = devm_request_irq(dev, irq, ufshcd_threaded_intr, IRQF_SHARED, UFSHCD, hba);
+       }
+
        if (err) {
                dev_err(hba->dev, "request irq failed\n");
                goto out_disable;
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index 248d0a5bef40..c1494a459b87 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -897,6 +897,13 @@ enum ufshcd_caps {
         * specific operations and TX Equaliztion Training procedure.
         */
        UFSHCD_CAP_TX_EQUALIZATION                      = 1 << 13,
+
+       /*
+        * This capability allows the host controller driver to choose whether
+        * to register interrupts in a threaded manner or in a standard
+        * (non-threaded) manner
+        */
+       UFSHCD_CAP_INTR_THREAD                          = 1 << 14,
 };

 struct ufs_hba_variant_params {
--
2.34.1

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